Paper-bag machine



(No Model.) 4 Sheets-Sheet 1. W. LIDDELL. PAPER BAG MACHINE.

No. 487,225. Patented Nov. 29, 1892.

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(No Model.) 4 Sheets-Sheet 2.

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PAPER BAG MACHINE.

No. 487,225. Patented Nov. 29, 1892.

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(No Model.) 4 sheets-sheet 3. W. LIDDELL.

PAPER BAG MAGHINE.

No. 487,225. Patented Nov.. 29, 1892.

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(No Model.) 4 Sheets- Sheet 4.

W. LIDDELL.

PAPER BAG MACHINE.

No. 487,225. PatentedNov. 29, 1892.

UNTTED STATES PATENT Ormea.

VILLIAM LIDDELL, OF BROOKLYN, NEW YORK, ASSIGNOR TO VELLS A. BINGIIAM, OF BLOOMFIELD, NEW' JERSEY.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 487,225, dated November 29, 1892. Application filed February 11, 1892. Serial No. 421,134. (No model.)

To all wwm t may concern.-

ment.

' chine.

Be it known that I, WILLIAM LIDDELL, of Brooklyn, Kings county, and State of New York, have invented a certainnew and useful Improvement in Paper-Bag Machines, of which the following is a specication.

My improvement relates to machines for forming the bottoms of paper bags.

I will describe a machine embodying my improvement and then point out the novel features in the claims.

In the accompanying drawings, Figure l is top View of amachine embodying myim prove- Fig. 2 is a side elevation of this machine,thedriving-pulleysbeingoinitted. Fig. 3 is a central longitudinal section of the ma- Fig. 4E is an elevation, taken transversely of the machine, showing certain creasing devices. Fig. 5 is a sectional elevation taken transversely to the length of the inachine and illustrating cert-ain parts ot' past ing mechanism. Fig. 6 is a vertical section taken at the plane of the dotted line 0c an, Fig. 5. Fig. 7 is an elevation taken transversely to the length of the machine and illustrating certain creasing and slitting devices. Fig. 8 is a top view of a bag blank or tube of the kind which is intended to be treated in this machine, and in this tigu re are also illustrated certain guides to secure the proper presentation of the bag blanks or tubes to the machine. Fig. 9 is an elevation of certain parts, taken transversely to the length of the ma-v chine, and illustrating one stage in the formation of a bag-bottom.` Fig. l0 is an eleva` tion of certain parts, taken transversely to the machine, and illustrating another stage in the formation of the bag-bottom. Fig; 1l is an elevation of certain parts, taken transversely to the length of the machine, and illus-y trating another stage in the formation of a bag-bottom. Fig. l2 is a section of certain parts, taken longitudinally of the machine, and illustrating the final folding of a bag-bottom. Fig. 13 is a top View of a bag having its bottom completed.

Similar letters of reference designate corresponding parts in all the figures.

A designates the frame of the machine. This frame may he of any suitable construction, In the present instance it consists of side pieces and transverse stretchers.

B designates a table or platform, upon which bag blanks or tubes are placed one at a time and presented to a pair of cylinders O C2.

The table B, as here shown, is supported at the end which is the nearer to the cylinders O O2 by having side frames b, which are comprised in it, fastened to are-shaped brackets a, which are mounted upon the side pieces of the frame A, and also by having its side pieces b secured to brackets b', which are supported by the side pieces of the frame A.

On the table B are guides b2 b3 h4. The guides b2 are intended to be stationary during the operation ofthe machine. They are, however, adjustable transversely to the length of the table B to suit dierent-sized bag-blanks. As hereshowmtheiradjustmentisprovidedfor by forming in them slots, which extend transversely to the length of the table, and passing through these slots thumb-screws, which engage with tapped holes in the tableand serve to clamp the guides in position after adjustment. The guides b3 are mounted upon a bar b5, which is fitted to slide upon the tableBtransversely to the length of the latter. It will suffice to merely rest this bar upon the table. Where it has its bearings I may provide the table with metal plates b, when the table is made of Wood, as will ordinarily be the case. On the top of the bar are brackets 127, and to these are pivotally connected at oneendlinks bs, Whose other ends are connected with arms b9, mounted upon a rock-shaft Z910. The oscillation of this rock-shaft will cause the bar bwith its guides b3, to reciprocate toward andfrom the stationary guide b2. Owing to the Inovement of the guide b3 the cial care upon the tableand it will bebrought to the proper position transversely of the table to bepresented to the cylinders O' O2.

The rock-shaft b1@ is operated by a rockshaft b, extending transversely to the table B. Motion istransmitted from the rock-shaft b to the rock-shaft Z910 in one direction by means of an arm blz, affixed to the rock-shaft bu, hearing upon a cam 513, affixed to the rockshaft blo. A spring b moves the rock-shaft person tending the@f machine can place a bag-blank without spe- IOC 510 in the reverse direction by being connected at one end with the table and at the other end with an arm affixed to said rock-shaft. The rock-shaft Z211 is oscillated in one Adirection by a rod b15,which at one endis pivotally connected to an arm bw, extending from said rock-shaft. The rod b is reciprocated in one direction by a cam Z117, mounted upon a shaft C3, carrying the cylinder C2. The rock-shaft bn is oscillated in the reverse direction by means of a spring bis, connected at one end with an arm Z919, extending from said rockshaft, and at the other end with the table B.

From the rock-shaft b arms Z920 extend upward through slots in the table B. Links b21 connect these arms with brackets Z922, mounted upon a plate Z323, upon which the back guides b4 are mounted. The bar 623 may s'impl'yrest upon the top yof the table B, and', if desired; wearing-plates of metal b24may be arranged underit upon the table B `when the lattery is made of Wood The bar Z923y andback guides b4 are reciprocated lengthwiseot' the table Bl V,presentation to the cylindersC C2.

' When ,they reciprocate forward' abag-blank transversely f ed upon fthe table in vrfront 4of* them will be adj ustedto thelproperplace for 'Bf designates a table Whichlmay besupf` ported in 'any suitable manner. A.As here shown, it is supported by a standard Z925, 'exftending to it frointhe side pieces of the table lB, and by astandard Z126, extending from one ofth'e side pieces of the frame A.v rl `his table is elevated considerably above gthe table and is arranged toene side of it. It has side guidesb and an end. guide '1128. A pile of bag blanks or tubes may be placed upyonlthisf table Bv and fed one at a time tothe tableBl rlhe cylinder C is mounted upona `shaft 0,' which is journaled inv bearings on the :side pieces ot' the frame A.V :The vshaftCi'g whereby the'cylinder C2 is supported, isvjour naled in bearings provided in standards ct", erected upon the arc-shaped brackets cof the frame A.

The cylinder C is twice the size of thecyll; inder C? and is intended to operate in con?l nection with two bag-blanks at-the Sametime,

while the cylinder C? is intended only topp#i crate upon one bagfblank at a time. 4 TheI cylinder C is provided with grippers consisting of a finger c, mounted on4 a rocki shaft c and lying within a suitable recess in i the periphery of the cylinder C', thefrock shaft being journaled in the cylinder.v The 'rock-shaft c of each gripper has afflxedrsto it a tumbler-head c2, which Aco-operates with certain iixed cams c3 c4 c5. The ixedcams c? kc4 aremade in the form of studs or pins, preff erably furnished with antifriction rollers. The came5 is supported by/one of` the arc-` shaped brackets a of the frame A. The'carn c4 is supported by one of the standards @fof lthe frame A. The cam c5 ismadein the form of a'plate depending from an arm Whichis lfastened to one'of'the side pieces of thefrarne A. The cam c3 co-operates with the tumbler of each gripper to throw the gripper-finger wide `-open into a position to be engaged with the bag-blank. The cam c4 coacts with the tumbler of each gripper, so as to cause the gripper to engage with the bag-blank. The

`cam c5 co-operates With-the tumbler ot' each .gripper to slightly open the gripper for the purpose of releasing a bag-blank.

It may be Well for me to here remark that each bag blank or tube E has a lip e on that side which does not comprise the longitudinal seam. The bag-blanks are laid4 upon the table with the seamed side uppermost, and consequently with the side which is provided with the lip undermost. Each gripper of the cylinder CA engages .with the lip e of. av bagblank, andconsequently engages withy the lowerunseamedside of the bagfblank .'lhe other'side of yeach bag-blankwill beengaged with fthe cylinder`C2. f The tumbler belonging to each gripper Iof ythecylinder C is pivotallyconnected with one end of a -rod c6, which atthe other end` Works longitudinally in abearing c7, with which the cylinderis provided. ;A spiral spring c8 surrounds each rod c6 between the bearing c7 and a collare", atixedto the rod.

rlhe engagement ofthe upper scanned slide of each bag-blank with ythe cylinder C2 is effected by pins C10, extending from thiscylinder. Y There may be any number of these pins.

Onlytwo have been shown. v They are insert- Ved in recesses in the cylinder. Preferably the cylinder'will be provided with anumber fof sets of recesses, into which these pins may be insertedto suit different-sized bag blanks or tubes. Opposite the recessesforthese pins the cylinder C willbeprovidedwith similar recesses, so that the pin-points will notbe .dulled by contact with the latter cylinder. As Ythe cylinders Of C2 rotate they will pull opposite sides of a bag-blank apart, sc as to spreadout the side flaps e and cause the end aps e? to turn inward. not avcomplete cylinder, but hasa segment yentirely removed. Each bag `blank or ytube will be'adjusted by the` movable guides closely Within thebite of the cylinders while .this

@open segment is passing the cylinder' C. AOwing to `this no feeding'of the bag blank or tube tothe cylinders willv take place vuntil-the .proper time, when a gripper of the cylinder C?. becomes verngfaged with it.

The .cylinder Czis providedwith slittingknives F, extending circumferentially of it. These knives arelitted into recessesin Ythe cylinder and secured in any suitable manner. Preferably the... cylinder Will be provided With a number yof sets of recesses forreceivingthe slitting-knives, in order` that the latterlmay be set suitably for bag blanks or tubes of different sizes. Opposite the recesses with Which the cylinder (Fis provided for the slittingvknives there will. be formed in thek cylinder C2 similar recesses, so thaty the edges of the lOO IIC

The cylinder C2 is knives will not be dulled by contact with the cylinder C2. The function of the slittingknives is to cut slits forming the edges es of the side flaps e of each bag blank or tube.

On the cylinder G2 is a creasing-bar G. It is set in a recess extending parallel with the axis of this cylinder, and in the opposite portion of the cylinder C a similar recess will be formed to allow the edge of the creasingbar to Work inward of the periphery of the cylinder C. The function of this creasingbar is to form a crease along the line e4, Fig. ll,

disengage the upper seamed side rearward of the side iiaps and end aps, so as to cause the accurate folding of the bagbottorn against the body of each bag at thisV line. There may be a number of recesses in the cylinder C2 for receiving this creasing-bar, the object of a plurality of these recesses being to enable different sizes of bag blanks or tubes to be inserted. In the cylinder C there will be a corresponding number of l'ecesses.

In the cylinder C2 are a number of circumferential grooves h. ferential grooves are the points of strippingfingers H, which are mounted upon a rod 7L', which is bolted to arms h2, mounted upon the shaft C3, supporting the cylinder C2. By slackening the nuts whereby the rod h is bolted to the arms h2 the stripping-fingers may be rocked inward and outward relatively to the periphery of the cylinder C2. The arms h2 have depending portions, which are provided with arc-shaped slots concentric with the axis of the shaft C3. Screws 723, passing through these slots and engagingwith tapped holes inthe standards d', serve to clamp the arms h2 in position. On slackening the screws the arms may be adjusted to vary the position of the stripping-fingers circumferentially of the cylinders C2. After the adjustment of the arms they may be clamped in position by tightening the screws.

The function of the stripping-lingers is to of each bag blank or tube from the pins cw. When the disengagement of the bag-blank from the pins om occurs, the end flaps will be turned inward, although not attened down. To prevent them from bending out to'their original position before being folded down flat, I elnploy a roller O, journaled in arms o, ex-

tending from the arc-shaped brackets a. This roller is located at a considerable distance from the cylinder. On one of its journals a pinion o. is affixed, and with this engages a rack-bar o2, which at one end works through a guide o3, extending from one of the arcshaped brackets ct, and at the other endl is forked, so as to straddle and derivesupport from a shaft P. On the shaft P is a cam o3, which acts upon a stud or roller o4, mounted upon the rack-bar o2. The cam reciprocates the rack-bar in one direction. A spring o5, fastened at one end to the rack-bar and at the other end to one of the side pieces of the Opposite these circum frame A, reciprocates the rack-bar in the reverse direction. An oscillating motion of the roller O is derived from the reciprocations of the rack-bar. On the journals of the roller O tuckers Q are xed. As the roller is reciprocated these tuckers are swung downward into the position indicated by dotted lines in Fig. 3 to fold in the material where the`end tucks join the upper side of the body of the bag blank or tube, as may be readily understood by reference to Fig. 10.

R designates a presser-roll journaled in arms fr, extending from the arc-shaped brackets a. While the end flaps are folded inward each bag blank or tube will pass between the presser-roller R and the cylinder C, and thus the side flaps will be folded down fiat, as illustrated in Fig. l0. Leaving the presser-roller R each bag blank or tube passes to pasting devices.

S designates a pasting-roll supported upon a shaft s, j ournaled in bearings arranged upon the side pieces of the frame A. On the shaft s there are pulleys s', and around these pass belts T, which also pass around pulleys u on a shaft U, which is supported in bearings on the side pieces of the frame A. These belts also pass around a pressing-roller V and around guide-rollers and tighteners W.

The pasting-roll S has a pasting-segment s2, which is periodically moved opposite the cylinder C to deposit paste upon a bag-blank. The shape of this pasting-segment may beunderstood from the dotted lines in Fig. 1.1,Which illustrate the blank. Paste is obtained by this pasting-segment from a roll s3, j ournaled in bearings erected upon the side pieces of the frame A, and said roll s3 receives paste from a roller s4,whi.ch is journaled in brackets S5, extending from the side pieces of the frame A. The roller s4 runs in a tank s6, containing paste. Brackets S7, extending from the side pieces of the frame A, in connection with cross-pieces sS s, sup-- port the'tank S6. The tank rests directly upon the cross-pieces ss S9. The cross-piece S9 is at one end pivoted by a pin 310 to one of the brackets S7, or an extension of the latter, and at the other end rests upon the other bracket S7. On the latter bracket is a pin 321, which will ordinarily hold the cross-piece S9 in position upon the bracket s?, upon which its free end rests. By slightly lifting the free end of the cross-piece s this cross-piece may be swung off the bracket S7, which is provided with said pin S21, and then the paste-tank may be removed. As the rolls s4 s3 rotate in close contact they will disintegrate any lumps which may occur in the paste. The pasting-segment s2 of the pasting-roller is connected with the hub of the roller, so that it may be adjusted radially inward whenever it is not desirable to apply the paste. Sometimes it happens that the bag-blank becomes disarranged, and in consequence of such disarrangement it is desirable to stop the operation of pasting IOO IIO

Y without stopping the whole machine in order to avoid-the application of paste tothe surface of the cylinder C. It is to provide for suspendingthe operation of pasting-that the pastingsegment is afforded opportunity for inward adjustment. The means for adjustingthe pasting-segment relatively tothe hub of -the past- .ing-roller are best illustrated in Figs. 5 and 6,

although Figs. l and 3 may also be referred to for an understanding of these means. It will be seen that the pasting-segment s2 has a shank s, having a hole S12, which surrounds theshaft s and having its edges fitted in slidewaysformed in the hub of thepasting-"rolleri The hole S12 is considerably larger than the shaft s in the direction of the length of the shank .ofthe pasting-segment, so as to afford .provision for theadjustment of the past- `ing-segment radially to the hub.

ln the shaft s is a hole Within which a rod S13 is fitted so that it can slide longitudinally. At the inner end of this hole isa recess S14, which l.opens atthe periphery oftheshaft s. Through thisopening extends a toe S15, mounted upon .a-shaft 316. The rod 81.3 abuts against the toe S15, and-thetoe abuts against .the hole .312 in .the shank ofthe pasting-segment, bearing against/that portion ofthe -shank ofthe pasting-segment which is on the opposite side of theshaft s to the portion of vsaid shank on y.which thepasting-segment is atixed. -.Obvi ously when thev .rod S13 is forced inward the .toe-s15 will: be .forced outward, and this will cause the pasting-.segmentto be retracted, so

that it will not applypaste to anything upon Y-the surface. ofthe cylinder C or to the surface of said cylinder. The. pasting-segment is normally held in its outermost position and is adjusted to that position whenever this is possible by meansof springs 317, secured at .one end to. the. peripheryof. the hub of the pasting-roller and at the otherrend bearing yupon .that end, of the shank. of thepastingsegment on whichthe pasting-segment is not arranged. The .rod .S13 is forced inward by means of a toe S13, mounted upon a rock-shaft S19, supported in brackets S20, affixed to one of the side pieces of the frame A. On this rockl .shaft is an arm S21, and to the outer end of the latter is connected a rod S22, which at the lower end is connected to a treadle S23. The

treadlesz' is fulcrumed at one end to a stud S24, supported by the frame A, and at the for- Vward end is guided in a bracket 525, mounted vupon one of. the side `pieces of said frame. Above'the forward end of this treadle is a lever S26, which is fulcrumed between its ends toene ofthe side pieces of the frame A. and

may berocked so as to engage with .the upper end of the treadle for the purpose of holding lit depressed. A spring S27 normallyholds the treadle S23 in an elevated position, said spring being connected at one end with the treadle and at` the other end with one of the side pieces .of the .frame A.

.Obviously the operator of the machine may means of set-screws.

retract the. pasting-segment at any time by depressing the treadle S23. lf he desires'to keep the pasting-segment permanently retracted, he has only to fasten the lever S23 in its. depressed position by means of the le- .in-Fig. 4, and fastened tothe armsbyscrews passing through the slots and engaging with tapped! holes inthe arms,they`v can be adj usted radially to the ,shaft U.

The cylinder C will be providedmwith grooves opposite to the positions into which the creasing-bars will be adjusted for different-sized bag-blanks. `It is advantageous to afford provision forthe yieldingof thesecreasing-bars, and consequentlythefshaft U .is supported in yielding journal-boxes u. These .journal-boxes are 'supported vin housings u2, formed on brackets us, extendingfrom theside pieces of the frame A. A rod extends through the lower partof the housing and bears against each journal-box. This rod has a head a4.

. Screws 11.5 pass freely throughthis` head and engage. with. tapped. holes iny thehousing. Springs u@ `surround these screws between theirv heads and the head ut, sor as Jtopress each journal-box upward or toward thecylinder C. lt will bev understood that this method .of supporting the shaft U allowsthe creasing- `bars to yield away from, the cylinderwhile performing their work.

The guide-pulleys W are supported on studs w, extending from brackets 5w', fastened to the side pieces of the frame A. These brackets are intended to be adjustable, sothatthe pulleys W will also serve as belt-tighteners. They may be adj ustably connected withthe vside pieces of the frame A by forming longitudinal slots in them and. passing screws through these slots and into. tapped holes in the side pieces of the frame, for thenthe brackets may be clamped in different. positions.

bottom. after the folding is completed, and

thereby completes the bag-bottom.

It will of course be understood that the belts T by moving along with the lower part ofthe cylinder C will hold the bag blanks or tubes against the cylinder. .The manner in which they do this may beunderstood by reference to Fig. l1.

Just before the final pressing of thebag a folding-bar Y folds over the side -Viaps e'. This bar Y extends along the cylinder'C' and is supported at one end only. ,Its support `The pressing-roller V presses vdownthe bagi ited extent on consists of an arm y, fulcrnmed between its ends to a pin y', carried by a bifiircate arm y?, which is loosely hung on the shaft C. The pin y extends through one of the bifurcate extremities of the arm y2. The other bifurcate extremity of the arm y2 has a guide, through which the ai'm 'y may swing toa limits fulcrum-pin y. The arm y2 has but a limited oscillating motion, and its motion is restricted in one direction by a stop ys, mounted upon one of the housings u2, this stop b eing so arranged that the lower extremities of the bifurcate portions of the arm y2, serving as a guide for the arm y, will contact with them.

Motion is imparted to the arm y2 by means ofa rod yt, which is connected with its upper end above the shaft C and is actuated in one direction by a ca m p5 on one of the journals of the roll s3. This cam co-operates with a lstud or roller y@ on the rod tf. The arm y2 is moved in the reverse direction bya spiing y1, which at one end is fastened to an arm y?, depending` from one of the brackets 37, and at the other end is fastened to a rod ys, which at the upper end is pivotally connected to the cam-rod n4 and at the lower end is pivotally connected by a pin yf to one of the side pieces of the frame A.

The object of supporting the folding-rod Y by means of the arm y is to enable the folding-rod to be moved nearer to the cylinder C when it is moved forward. The operation of the arm y is effected by means of a stationary cam ym, extending from one of the side pieces of the frame A and co-acting with a stud or roller y, with which the forward end of the arm y is provided. It will be seen that as the arm y2 swings forward the stud or roller y of the arm y will travel along the @amg/10, and that in consequence of this the folding-rod will be gradually moved closer to the cylinder C. The cam if is so shaped that the folding-rod will be in advance of the bag-blank moving forward with the under side of the cylinder C. Owing to this it will lift the forward flap e of the bag-blank and hold it away from the cylinder C until it reaches the pressing-roll V, as indicated in Fig. l2. After this the folding-rod will be moved quickly backward, so as to be behind the other iiap e of the bag-blank. Subsequently it :is moved quickly forward, so as to fold forward the rear tiap e. At about this time the forward flap e is moved under the pressing-roller V and is folded down fiatover the rear flap e'. The pressing-roller, as before explained, atteiis down b'oth the tiaps and completes the bag-bottom.

A stripper or guide Z, arranged above the pressing-roller V, prevents the completed bagblanks from continuing onward with the cylinder C.

The com rollers Z pleted bag-blanks pass between Z2 Z3 Z4 and are carried away and discharged intoa receptacle Z5. vBelts Zimay pass around the lower rollers Z3 Z4, if desired.

Motion may be transmitted to the various rotary parts in any desired manner. As here shown, Z7 is the driving-shaft of the machine, and on it is a gear a, which engages with a gear-Wheel a on the shaft C, carrying the cylinderC. On the shaft C3 of the cylinder C2 is a gear-wheel z2, engaging with the gearwheel z. The shafts of the pasting-roller is provided with a gear-wheel z3, which derives motion fromv the gear-wheel a. The shaft U is provided with a gear-wheel c4, which engages with the gear-wheel a. One of the journals of the roller s3 has affixed to it a gear-wheel z5, deriving motion from the gearwheel z3 and transmitting motion to a gearwheel a, affixed to the shaft P, supporting the roller s4. The pressing-roller V and the delivery-rollers Z Z2 Z3 Z4 derive motion through any suitable train of gearing.

What l claim as my invention, and desire to secure by Letters Patent, is

l. In a paper-bag machine, the combination of a table, a side guide, a rock-shaft, an arm extending from the rock-shaft and connected with the side guide, a second rock-shaft, and a tappet on the second rock-shaft coasting with the tappet on the rock-shaft which is connected with the side guide, substantially as specified.

2. In a paper-bag machine, the combination of a cylinder upon which the bag-blank is fed and an upper cylinder having a segment removed, and mechanism operating with said roo cylinders for opening the end of the bag-tube, substantially as specified.

3. In a paper-bag machine, the combination of two cylinders arranged one opposite the other, one of said cylinders having a portion 105 removed, and means for automatically presenting a bag-blank to such cylinders, and means substantially such as described for opening the mouth of the bag-tube, substantially as specified.

4. In a paper-bag machine, the combination, with a cylinder around which the bag-blank is passed and an opposite cylinder for coacting with the first-mentioned cylinder to separate the sides of a bag-blank and thereby 115 turn in end flaps, of a cylinder for preventing the end flaps from resuming their normal position and tuckers supported on the journals of said cylinder for tucking in the inaterial of the bag-blanks adjacent to the end rzo tiaps, substantially as specified.

5. In a paper-bag machine, the combination, with a cylinder around which a bag-blank is4 fed, of a pastingroll having an adjustable pasting-segment and mechanism for 'retract- 125 ing said segment, substantially as specified.

6. In a paper-bag machine, the combination, with a cylinder around which a bag-blank is fed, of a pasting-roll having a retractable pasting-segment, a toe extending into the 13o IIO shaft of said pasting-roll for retracting' said n segment, a rod arranged i l ating said toe, and aitreadle for actuating said n said shaftforactnrod, substantially as specified.V

7. In 'a paper-bag machine, the combination, with a cylinder around which bag-blanks are passed, of a shaft carrying rotarily-adj ustalole creasers and yielding'spring-supporting belarings for said shaft, substantially as specified.

8. In a paper-bag machine, the combination, With a cylinder around which bag-blanks are passed, of a folding-bar', an arm supporting said folding-bar and fulcrumed toafsecond afm, a cam for moving the foldingba toward and from the cylinder', and lneans'foroscillat- 15 ing-the second arm, substantially as specied.

' ,In testimony whereof I have signed my name to this specification in the presence of two subscribing Witnesses.

. WM. LIDDELL'.

Witnesses:

ANTHONY GEEF, WM. M. ILIFF. 

